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The State Distribution of NH2(2A1) Produced in the Collision of Ar(3P0,2)+NH3
Zou Shengli1, Dong Feng1, Wang Liming1, LiXuechu1, Cui Zhifeng2
1.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian  116023;2.Physical Department,Anhui Normal University,Wuhu 241000
Abstract:
Study on the state distribution of nascent product NH2(2A1)in the reaction of Ar(3P0,2)+NH3 under beam condition has been reported firstly herein.The emission spectra of NH2(-) were assigned in detail.Most of the emission bands are attributed to(0,ν2',0)-(0,0,0)transition with ν2' 5,k'a≤6,J'≤10.Rotational temperature around b/c axis of level(0,2,0,K'a=1)is 1050K,which is higher than that of the parent NH3.It should be attributed to the recoil effect of collisive partner when Ar separates from NH3.
Key words:  NH2,Collisional dissociation,Product state distribution
FundProject:国家攀登计划和自然科学基金资助项目(No.29873051)。
Ar(3P0,2)+NH3初生态产物NH2(2A1)的内态分布
邹胜利1, 董峰1, 王黎明1, 李学初1, 崔执凤2
1.中国科学院大连化学物理研究所分子反应动力学国家重点实验室大连 16023;2.安徽师范大学物理系 芜湖 241000
摘要:
首次报告了在分子束条件下,研究Ar(3P0,2)+NH3碰撞解离反应·利用单光子计数方法进行测量,获得了部分转动分辨的初生态产物NH2(2A1)→(2B1)发射谱,并详细地进行了标识·发现主要为(0,v 2',0)→(0,0,0)跃迁(v2'≤5,K'a≤6,J'≤10)。通过对部分分辨较好的光谱范围进行了模拟,得到反应生成的NH2(2A1,v2'=2,k'a =1)态绕b/c轴的转动温度为1050K,高于母体分子NH3的转动温度300K。由亚稳态碰撞传能电子交换机理认为这是由于碰撞对手Ar和母体NH3分离时反冲作用的结果。碰撞传能解离机理和光解过程不同,后者仅观察到轴的转动激发。
关键词:  NH2  碰撞解离产;物态分布
DOI:10.1088/1674-0068/13/1/1-5
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